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Abstract #1711

Differentiation of brachial plexus caliber irregularities with simultaneous neurography and T2 mapping from MIXTURE

Hajime Yokota1, Takayuki Sada2, Ryuna Kurosawa2, Takafumi Yoda2, Koji Matsumoto2, Takashi Namiki3, Masami Yoneyama3, and Takashi Uno1
1Department of Diagnostic Radiology and Radiation Oncology, Chiba Univerisity, Chiba, Japan, 2Department of Radiology, Chiba Univerisity Hospital, Chiba, Japan, 3Philips Japan, Tokyo, Japan

Synopsis

Keywords: Nerves, NeurographyMultifocal chronic inflammatory demyelinating polyneuropathy (CIDP) is characterized by asymmetrical and irregular nerve thickening. However, the nerves are sometimes irregular in caliber even without obvious neuropathy. MIXTURE can simultaneously acquire neurography and T2 mapping. The diameter and T2 values from MIXTURE were significantly wider and higher in multifocal CIDP than in cases with normal but irregular caliber (P = 0.029 and 0.004). The AUCs of ROC analyses were 0.889 and 0.972 in diameter and T2 values for differentiating the two groups. Diameter and T2 values acquired with MIXTURE help differentiate whether caliber irregularities in the brachial plexus are pathological.

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Keywords